* feat: add `helmfile doctor` command for AI-assisted diff analysis
`helmfile doctor` runs `helmfile diff` and asks an OpenAI-compatible LLM to
summarize the changes and flag risks (data loss, security exposure, breaking
changes, downtime, performance, best-practice issues).
Key design decisions:
- When no LLM is configured, doctor is equivalent to `helmfile diff` with
one exception: --show-secrets is always forced off (secrets never reach
stdout, even without an LLM).
- Secrets are ALWAYS redacted via two layers: (1) ShowSecrets() forced to
false so helm-diff emits <REDACTED> placeholders; (2) a defense-in-depth
text redactor strips residual secret-looking content (Secret YAML blocks,
sensitive key/value lines, base64 blobs, JWT tokens) before LLM transmission.
- LLM configuration precedence: env (HELMFILE_LLM_*) < helmfile.yaml (llm:)
< CLI flags (--llm-*).
- Supports any OpenAI-compatible backend (OpenAI, Azure, One-API, LiteLLM,
Ollama, etc.) with automatic response_format fallback for backends that
don't support JSON mode.
- Prompt injection defense: release names and environment values are
JSON-encoded before insertion into the LLM prompt.
- Exit codes: 0 (success/low-risk), 2 (high-risk gate, bypass with --force),
1 (other errors). Helm-diff's 'detected changes' exit-2 is swallowed.
New packages:
- pkg/agent/llm: OpenAI-compatible client with JSON response parsing, mock
client for testing, prompt builder with injection defense.
- pkg/agent/doctor: secret redactor (state machine + regex), report renderer
(markdown + JSON), config resolver (env < yaml < flag merge).
Testing: 70+ unit tests covering redaction patterns, prompt injection,
response_format fallback, JSON parsing, yaml roundtrip, concurrency safety,
panic recovery, and error propagation. go test -race passes.
Documentation: full doctor section in docs/cli.md, llm: block reference in
docs/configuration.md, updated skills/helmfile for AI agents.
Signed-off-by: yxxhero <aiopsclub@163.com>
* docs: fix doctor equivalence wording per PR review
Per review feedback (PR #2660): the docs claimed doctor is 'equivalent to
helmfile diff — same flags, same output, same exit codes' in the unconfigured
path, but this over-promises because:
1. doctor --output is the report format (not helm-diff's output format)
2. helm-diff's --output is exposed as --diff-output in doctor
3. --show-secrets is silently ignored
Updated all three locations (cli.md, cmd/doctor.go Long + godoc, pkg/app/doctor.go
godoc) to say 'falls back to helmfile diff with --show-secrets forced off' and
explicitly note the --output / --diff-output flag difference.
Signed-off-by: yxxhero <aiopsclub@163.com>
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Signed-off-by: yxxhero <aiopsclub@163.com>
